Service difficulty report · Transmitter · Boeing 757224

Difficulty date
August 12, 2023
Submitted
August 18, 2023
Operation
Air carrier
Aircraft
N14107
Make and model
Boeing 757224
Aircraft serial
27297
Aircraft time
107,877 hours, 25,364 cycles
Part
Transmitter
Part number
7898301
Part serial
94050025
Condition
Faulty
Location
Eng#2
Part time
92,483 hours, 21,003 cycles
Stage of operation
TO
How discovered
O
Nature of condition
J, O
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING T/O ROLL RT ENG EPR SETTING FLUCTUATED WITH A/T ON. NOTAB LE THROTTLE SPLIT. MCDP AUTOTHROTTLE NO FAULTS TRST OK. RIGHT EEC BITE READS FOLLOWED FIM 76-11 FAULT TREE 804--UP TO STEP 13 - POWERPLANT REMOVED #2 ENG EPR TRANSMITTER IN REF WITH AMM 77-11-01. INSTALLED #2 ENGINE EPR TRANSMITTER REF AMM CC,AA,ED TEST #9 TO TRY AND DUPLICATE ISSUE. 77-11-01-404-007-R00. REQUIRES FUNTIONAL TEST TASK 77-11-00-725-001-R00. PARTS USED: 19-7711-9-0001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1855366 SN OFF 0025 TRANSMITTER, EN OFF 19-7711-9-0001 0025 ON 19-7711-9-0001 6016 PERFORMED POWER PLANT TEST 9 AND 13 IN REF WITH AMM 71-00, NO FLUCTUATION ON EPR AND NO THROTTLE SPLIT. ADD EMP:230177